The Mechanism of Normal Labour

The mechanism of normal labor involves a series of coordinated steps that enable the baby to be delivered through the birth canal. It begins with uterine contractions that help dilate the cervix and push the baby down. The baby moves through the pelvis in a series of rotations, starting with engagement, followed by descent, flexion, internal rotation, extension, external rotation, and finally, expulsion. These movements ensure the baby’s head is positioned correctly for delivery. The process is assisted by the mother’s efforts during pushing, and the delivery is completed when the baby is born, followed by the delivery of the placenta.